Bicycle horn



FIG. 1 is a front perspective view of our new bicycle horn;

FIG. 2 is a back view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a side view thereof; and,

FIG. 6 is a side view opposite the side view shown in FIG. 5. 

The ornamental design for a bicycle horn, as shown and described. 